Question 1

to rise and fall; to vary irregularly

Accepted Answer

fluctuate

Question 2

something that a copy can be based on because it is an extremely good example of its type

Accepted Answer

model

Question 3

the exact amount of one particular substance that is found in another substance

Accepted Answer

concentration

Question 4

an amount of something produced by a person, machine, factory, country, etc

Accepted Answer

output

Question 5

(v) to prevent movement through something

Accepted Answer

block

Question 6

group of similar cells that perform a particular function

Accepted Answer

Tissue

Question 7

(adj.) large and heavy; great in size or scope

Accepted Answer

massive

Question 8

change your behavior or ideas because it is necessary for your situation

Accepted Answer

adapt

Question 9

related to farming

Accepted Answer

agricultural

Question 10

a society that is well organized and developed

Accepted Answer

civilization

Question 11

grow particular crops

Accepted Answer

cultivate

Question 12

a group of countries or peoples controlled by one government

Accepted Answer

empire

Question 13

easily able to produce crops

Accepted Answer

fertile

Question 14

an activity that a person does for enjoyment

Accepted Answer

pursuit

Question 15

become very successful or very strong and healthy

Accepted Answer

thrive

Question 16

the number or amount of something in general

Accepted Answer

Volume

Question 17

(v.) to speed up, cause to move faster; to bring about more quickly

Accepted Answer

accelerate

Question 18

to melt or cause to melt; to warm up gradually

Accepted Answer

thaw

Question 19

the situation in which people are forced to leave the place where they normally live

Accepted Answer

Displacement

Question 20

related to heat or temperature

Accepted Answer

thermal

Question 21

To increase in size or amount

Accepted Answer

expand

Question 22

to move to a new place

Accepted Answer

relocate

Question 23

relating to the sea

Accepted Answer

marine

Question 24

the natural environment where a plant or animal lives

Accepted Answer

habitat

Question 25

poisonous

Accepted Answer

toxic

Question 26

extremely important or necessary

Accepted Answer

vital

Question 27

cloudy air near the ground

Accepted Answer

fog

Question 28

relating to breathing

Accepted Answer

respiratory

Question 29

all the animals and plants in an area

Accepted Answer

ecosystems

Question 30

to have an effect on someone or something

Accepted Answer

impact

Question 31

causing worry or fear

Accepted Answer

alarming

Question 32

a situation in which one event causes a series of other events to happen

Accepted Answer

ripple effect

Question 33

something that shows or suggests something

Accepted Answer

indication

Question 34

explain as the cause of something

Accepted Answer

attribute to

Question 35

getting in the way or getting involved in an unwanted way

Accepted Answer

Interference

Question 36

deadly

Accepted Answer

lethal

Question 37

intended to work for everyone in every situation

Accepted Answer

one-size-fits-all

Question 38

limit

Accepted Answer

curb

Question 39

the variety of life in the world or in a particular habitat or ecosystem.

Accepted Answer

Biodiversity

Question 40

very strong; very great

Accepted Answer

intense

Question 41

self-important; significant; consequent; following as a result; Ex. consequential air; CF. subsequent

Accepted Answer

consequential

Question 42

Animals that have hair and produce milk for their young

Accepted Answer

mammal

Question 43

decrease

Accepted Answer

decline

Question 44

closely connected or appropriate to the matter at hand

Accepted Answer

relevant

Question 45

A term that typically describes a species that no longer has any known living individuals.

Accepted Answer

Extinction

Question 46

unable to support human life and settlements

Accepted Answer

uninhabitable

Question 47

negative and unpleasant; not likely to produce a good result

Accepted Answer

adverse

Question 48

to fill something/somebody completely with something so that it is impossible or useless to add any more

Accepted Answer

saturate

Question 49

the maximum amount that something can contain.

Accepted Answer

capacity

Question 50

to make something happen suddenly

Accepted Answer

trigger

Question 51

The change of a substance from a liquid to a gas

Accepted Answer

Evaporation

Question 52

weak and easily hurt physically or emotionally

Accepted Answer

vulnerable

Question 53

to make worse

Accepted Answer

exacerbate

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